PIC16LF1458-E/P - 8-bit MCU, 7KB Flash, 48MHz, 20-PDIP | Microchip
MPN: PIC16LF1458-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.4 | $2.40 |
| 10 | $2.16 | $21.60 |
| 100 | $1.94 | $194.00 |
| 500 | $1.73 | $865.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC16LF1458-E/P Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and programmable I/O peripherals. The PIC16F family uses a modified Harvard RISC architecture with a 14-bit instruction word, prized for deterministic interrupt latency and a compact instruction set. Low-pin-count PIC MCUs like the PIC16LF1458 sit at the entry tier of the Microchip portfolio, targeting cost-sensitive embedded designs where 8-bit processing, USB connectivity, and ultra-low sleep current are sufficient.
Key features include 14 I/O pins, 1 10-bit ADC with up to 9 channels, 2 8-bit timers plus 1 16-bit timer, enhanced PWM, an mTouch capacitive-sensing module, and an integrated USB 2.0 full-speed SIE with on-chip transceiver that eliminates external USB PHY components. The nanoWatt XLP technology enables standby currents below 1 µA, making the device attractive for always-on sensor nodes. An integrated 3.3V LDO provides regulated internal core voltage from the external supply, allowing direct USB-bus powering.
Typical applications include low-cost USB peripherals (HID mice/keyboards, custom HID sensors, USB-to-UART bridges), capacitive touch user interfaces for consumer appliances, portable battery-powered instruments using nanoWatt XLP sleep modes, and small-scale sensor readout boards where a few ADC channels and PWM outputs replace discrete logic.
Designers should pay attention to the VUSB internal regulator current limit (about 100 mA total for the USB section), require an external 5V source on VBUS, and must correctly configure the CONFIG1 register to enable the USB transceiver. Decoupling capacitors (100 nF plus 4.7 µF bulk) must be placed within a few millimeters of VDD and the exposed thermal pad is not present on PDIP packages.
This page synthesizes distributor pricing, drop-in alternative MPNs, and application guidance not aggregated in any single manufacturer document.
Drop-in alternatives for PIC16LF1458-E/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1458-E/P (same form factor and footprint) — differing in Program Memory (Flash), ADC, I/O Pins, Mounting Type, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1458-E/P
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC16F18444-E/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18444-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.4 / Unit
View Datasheet →PIC16F1829-E/P
✅ Drop-In✓ In Stock
$1.41 / Unit
View Datasheet →PIC16F1454-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.32 / Unit
View Datasheet →PIC16LF1458-E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC (modified Harvard RISC, 14-bit instruction) |
| Series | PIC16F Family (XLP) |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 512 bytes |
| Max CPU Frequency | 48 MHz |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 14 |
| ADC | 1 x 10-bit, up to 9 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Channels | Enhanced PWM (3 channels) |
| USB | USB 2.0 Full-Speed with on-chip transceiver |
| Capacitive Touch | mTouch peripheral |
| Package | 20-pin PDIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Operating Temperature | -40C to +125C |
| RoHS Status | Compliant (per third-party distributor listing) |
| MSL Level | Not applicable (through-hole package) |
PIC16LF1458-E/P Pin Configuration
| Pin 1 | RA3/MCLR/VPP — Digital I/O / Master Clear (reset) input / Programming voltage input |
| Pin 2 | RA4/AN3 — Digital I/O / Analog input channel 3 |
| Pin 3 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| Pin 4 | RA6 — Digital I/O |
| Pin 5 | RA7 — Digital I/O |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA0/AN0/VCAP — Digital I/O / Analog input channel 0 / Filter capacitor connection |
| Pin 8 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 9 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pin 10 | RC0 — Digital I/O |
| Pin 11 | RC1 — Digital I/O |
| Pin 12 | RC2 — Digital I/O |
| Pin 13 | RC3 — Digital I/O |
| Pin 14 | RC4 — Digital I/O |
| Pin 15 | RC5 — Digital I/O |
| Pin 16 | RC6/D+ — Digital I/O / USB D+ data line |
| Pin 17 | RC7/D- — Digital I/O / USB D- data line |
| Pin 18 | VBUS — USB VBUS sense input (5V) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (1.8V to 3.6V) |
Typical Applications
PIC16LF1458-E/P is suitable for 7 applications: USB HID Peripheral (Mouse / Keyboard / Sensor), Capacitive Touch User Interface, Battery-Powered Sensor Node, USB-to-UART Bridge / CDC Device, Industrial Control Front Panel, Portable Medical or Fitness Device, Consumer Appliance Controller.
USB HID Peripheral (Mouse / Keyboard / Sensor)
The PIC16LF1458-E/P is well suited to USB HID peripherals because the on-chip USB 2.0 full-speed transceiver and SIE eliminate the external PHY, the 7KB flash holds the USB stack plus a HID descriptor and report handler, and the 48MHz internal oscillator meets the USB 1.5 Mbps timing budget without an external crystal. Typical designs place the device directly on the 5V VBUS rail and use the internal 3.3V LDO for the USB transceiver section, requiring only the D+/D- 27 ohm series resistors and a USB connector. The nanoWatt XLP sleep mode enables battery-powered wireless-style HID devices that wake on a user button press and report state over USB, with standby currents below 1 µA extending coin-cell life.
Recommended
Capacitive Touch User Interface
The PIC16LF1458-E/P integrates Microchip's mTouch capacitive-sensing peripheral alongside the 10-bit ADC and 16-bit timer, enabling button, slider, and proximity sensing on the same die. In a typical appliance front panel the device scans 4-8 touch pads through high-impedance PCB electrodes, debounces the result, and drives PWM outputs to LED backlighting. The 1.8V-3.6V operating range allows direct connection to a 3.3V regulated rail or two AA cells, while nanoWatt XLP sleep mode keeps the touch-sense wake-on-press current below 1 µA between user interactions.
Recommended
Battery-Powered Sensor Node
Sensor nodes that take infrequent measurements and transmit data over USB or wired UART benefit from the LF1458's 1.8V-3.6V supply range, nanoWatt XLP sleep currents below 1 µA, and integrated 10-bit ADC with up to 9 channels. A typical design wakes every few seconds from an RTC or watchdog interrupt, samples a temperature or light sensor through the ADC, stores the reading in the 512-byte RAM, and returns to sleep. The 48MHz core executes the wake-handling firmware in well under 1 ms, so the average current is dominated by sleep leakage rather than active run time, enabling multi-year battery life from a CR2032 cell.
Recommended
USB-to-UART Bridge / CDC Device
USB-to-UART bridges historically require an external FTDI chip, but the PIC16LF1458-E/P's USB 2.0 full-speed peripheral and 48MHz core can implement a CDC class device directly. With 7KB flash the device can hold Microchip's USB CDC stack plus a UART at up to 115200 baud, eliminating an external bridge IC in designs that already include a PIC MCU. The 20-pin PDIP package is convenient for breadboard prototyping and through-hole assembly in low-volume industrial gateways where field-replaceable modules matter.
Recommended
Industrial Control Front Panel
Industrial control panels often combine capacitive buttons, LED indicators driven by PWM, and a USB service port for firmware updates or data logging - exactly the peripheral mix on the PIC16LF1458-E/P. The 14 GPIO pins drive button scanning, LED dimming, and a few optocoupler interfaces; the 16-bit timer provides accurate PWM for indicator brightness and motor speed control in small pumps. The -40C to +125C operating temperature range meets industrial environmental specs, and the 20-pin PDIP through-hole package survives vibration and field-replacement cycles better than fine-pitch SMD alternatives.
Recommended
Portable Medical or Fitness Device
Wearable fitness and portable medical devices combine small size, battery operation, capacitive touch buttons, and occasional USB charging - a profile that matches the PIC16LF1458-E/P's feature set. The 1.8V-3.6V supply works directly from a single lithium cell, the mTouch peripheral reads the user's taps on glass or plastic overlays, and the USB peripheral provides both charging handshakes and data sync to a host PC. The nanoWatt XLP sleep mode keeps idle wristbands drawing well below 1 µA between user interactions, extending battery life to weeks of standby on a small Li-ion pack.
Recommended
Consumer Appliance Controller
Small kitchen and household appliances - coffee makers, air purifiers, dehumidifiers - need a low-cost MCU that drives a display, reads buttons, controls a motor through PWM, and offers a USB service port for firmware updates. The PIC16LF1458-E/P covers this with its 14 GPIO, 3 PWM channels, mTouch buttons, and USB peripheral in a 20-pin PDIP package that simplifies through-hole assembly and repair. The 7KB flash holds a small RTOS or state-machine firmware plus a USB DFU bootloader, and the wide 1.8V-3.6V supply lets the device share a 3.3V rail with the display driver and motor-FET gate driver.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1458-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1458-E/P | PIC16F18444-E/P | PIC16LF18444-E/P | PIC16F1829-E/P | PIC16F1454-E/P |
|---|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 3.6V | 2.3V to 5.5V | 2.3V to 5.5V |
| Max CPU Frequency | 48 MHz | 48 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz |
| USB Peripheral | USB 2.0 FS + on-chip transceiver | USB 2.0 FS + on-chip transceiver | USB 2.0 FS | USB 2.0 FS | No USB | USB 2.0 FS + on-chip transceiver |
| ADC | 1 x 10-bit, 9 channels | 1 x 10-bit, 9 channels | Enhanced ADC (more channels/resolution) | Enhanced ADC (more channels/resolution) | 1 x 10-bit | 1 x 10-bit, reduced channels |
| Capacitive Touch (mTouch) | Yes | Yes | Yes (more channels) | Yes (more channels) | Yes | Yes |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Approx. Unit Price (qty 100) | USD 1.94 | USD 1.85-2.10 | USD 2.00-2.30 | USD 2.10-2.40 | USD 1.70-2.00 | USD 1.60-1.90 |
Key Differentiators
- Lowest-voltage variant with full USB and mTouch peripheral set (vs PIC16F1458-E/P)
- On-chip USB 2.0 full-speed transceiver eliminates external PHY (vs PIC16F1829-E/P)
- Higher-frequency 48 MHz core vs newer family members (vs PIC16F18444-E/P)
Design Notes
The PIC16LF1458-E/P operates from 1.8V to 3.6V on VDD (pin 20). When powered from a 5V VBUS for USB applications, the device uses its internal 3.3V LDO (driven from VBUS on pin 18) to power the USB transceiver section, and an external 3.3V rail must still be supplied on VDD. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 4.7 µF bulk capacitor if the supply is shared with other 3.3V loads. Estimated: VDD load current is typically 4-7 mA active at 48 MHz and below 1 µA in sleep, so the bulk capacitor is sized for the worst-case digital noise burst during ADC conversions rather than steady-state current.
Several common pitfalls catch first-time users of the PIC16LF1458-E/P. First, the LF variant cannot be powered from a 5V rail - if your design supplies 5V on VDD the part will be damaged; use the F variant or add a 3.3V LDO. Second, the USB peripheral requires the CONFIG1 register to enable the internal USB regulator and clock source; a device that enumerates erratically usually has CONFIG1 misconfigured. Third, the VCAP pin (RA0/AN0 shared) must have a 1 µF capacitor to ground when the internal regulator is enabled - omitting this prevents the core from starting. Finally, MCLR (pin 1) must be tied to VDD through a 10 kohm resistor for normal operation; leaving it floating causes intermittent resets.
For the 20-pin PDIP package, place decoupling capacitors as close as practical to VDD (pin 20) and VSS (pins 6 and 19). The PDIP package handles through-hole insertion and is forgiving for hand-soldered prototypes, but for production designs consider migrating to the QFN or SOIC variants on the same silicon die. The 20-pin PDIP does not have an exposed thermal pad, so thermal management is rarely a concern at the LF1458's typical power levels (well under 100 mW). If the design routes the USB D+/D- lines, keep them matched in length and place the 27 ohm series resistors within 5 mm of the MCU pins to meet USB 2.0 signal-integrity requirements.
Compliance Information
RoHS compliance per Fly-wing Electronics distributor listing (3rd-party verified). Microchip's full material declaration datasheet should be consulted for halogen-free status. AEC-Q100 is not applicable because the LF1458 is not marketed as automotive-grade.
